Bioceramic sealers are among the most important innovations in pediatric endodontics. They are designed to seal root canals more effectively while being highly compatible with the body's natural tissues.
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Although traditional materials such as zinc oxide-eugenol remain widely used, bioceramic sealers are gaining attention because of their excellent biological properties and sealing ability. However, their use in primary teeth should be based on scientific evidence and careful case selection.
✅ What Are Bioceramic Sealers?
Bioceramic sealers are calcium silicate-based materials developed to seal the root canal after cleaning and shaping. Unlike conventional sealers, they interact with body fluids and can form hydroxyapatite, a mineral naturally found in teeth and bone.
Their main characteristics include:
▪️ Excellent biocompatibility
▪️ Strong sealing ability
▪️ High antibacterial environment due to alkaline pH
▪️ Low shrinkage during setting
▪️ Ability to support tissue healing
These properties make them attractive for both permanent and primary teeth.
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Primary teeth have unique characteristics:
▪️ Thin dentin walls
▪️ Complex root canal anatomy
▪️ Physiological root resorption before tooth exfoliation
▪️ Close relationship with the developing permanent tooth
Because of these factors, the ideal filling material should:
▪️ Seal the canal effectively
▪️ Be gentle to surrounding tissues
▪️ Not interfere with normal root resorption
▪️ Reduce the risk of reinfection
Bioceramic sealers aim to meet many of these requirements.
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1. Excellent Biocompatibility
One of the greatest advantages is that bioceramic sealers are well tolerated by surrounding tissues, reducing inflammation if small amounts extend beyond the root.
2. Superior Sealing Ability
A tight seal prevents bacteria from re-entering the canal system.
A better seal increases the likelihood of long-term treatment success.
3. Antibacterial Properties
Their naturally high pH creates an unfavorable environment for many bacteria responsible for endodontic infections.
Although they do not replace proper canal cleaning, they provide an additional level of protection.
4. Bioactivity
Unlike conventional sealers, bioceramic materials actively interact with surrounding tissues.
They can stimulate mineral deposition and support natural healing.
5. Moisture-Friendly Setting
Primary teeth are often difficult to keep completely dry.
Many bioceramic sealers actually benefit from moisture during their setting reaction, making clinical handling easier.
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Despite their advantages, several limitations remain.
▪️ Higher cost than traditional materials.
▪️ Limited long-term clinical evidence in primary teeth compared with permanent teeth.
▪️ Some products may not resorb at the same rate as primary tooth roots, an important consideration before widespread use.
▪️ Clinical performance varies depending on the specific formulation.
Therefore, not every bioceramic sealer should automatically replace conventional pediatric materials.
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Bioceramic sealers are being investigated for:
▪️ Pulpectomy in primary teeth
▪️ Management of infected root canals
▪️ Cases requiring excellent apical sealing
▪️ Teeth with periapical inflammation
Most specialists recommend using them when the clinical situation is appropriate and after considering current scientific evidence.
✅ How Do They Compare with Zinc Oxide-Eugenol?
| Feature | Bioceramic Sealers | Zinc Oxide-Eugenol |
|---|---|---|
| Biocompatibility | Excellent | Good |
| Sealing Ability | Very High | Moderate |
| Bioactivity | Yes | No |
| Antibacterial Environment | High pH | Moderate |
| Clinical History | Emerging | Extensive |
| Cost | Higher | Lower |
| Long-Term Evidence in Primary Teeth | Growing | Extensive |
Recent studies suggest that bioceramic sealers provide promising biological and sealing properties in pediatric endodontics. Laboratory and early clinical evidence indicates favorable tissue compatibility and reduced bacterial leakage.
However, researchers consistently emphasize that high-quality long-term clinical trials in primary teeth remain limited. Additional evidence is needed before these materials can be considered the universal first choice for every pulpectomy.
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The development of bioceramic sealers represents a significant step forward in pediatric endodontics. Their biological compatibility, sealing capacity, and bioactive behavior offer advantages over many traditional materials.
Nevertheless, primary teeth have unique biological characteristics, particularly physiological root resorption. For this reason, clinicians should evaluate whether a specific bioceramic product is suitable for each case rather than assuming that all formulations behave similarly. Current evidence supports their potential, but continued research is essential to define their long-term role.
🎯 Recommendations
▪️ Select bioceramic sealers according to the clinical indication and manufacturer recommendations.
▪️ Maintain thorough canal cleaning and disinfection, as no sealer can compensate for inadequate treatment.
▪️ Consider the expected root resorption pattern when treating primary teeth.
▪️ Stay updated with new clinical studies as evidence continues to evolve.
▪️ Explain treatment options and expected outcomes clearly to parents or caregivers.
✍️ Conclusion
Bioceramic sealers are an important advancement in pediatric endodontics, offering excellent biocompatibility, superior sealing ability, and bioactive properties that may improve the success of pulpectomy in primary teeth.
While early evidence is encouraging, long-term clinical research is still developing. At present, these materials should be viewed as a valuable option within evidence-based pediatric dentistry rather than a complete replacement for established filling materials.
📚 References
✔ Coll, J. A., Dhar, V., Vargas, K., Chen, C. Y., Crystal, Y. O., & Alvares, O. (2020). Use of non-vital pulp therapies in primary teeth. Pediatric Dentistry, 42(6), 337–349.
✔ Donnermeyer, D., Bürklein, S., Dammaschke, T., & Schäfer, E. (2019). Endodontic sealers based on calcium silicates: A systematic review. Odontology, 107(4), 421–436. https://doi.org/10.1007/s10266-018-0400-3
✔ European Society of Endodontology. (2021). European Society of Endodontology position statement: Management of deep caries and the exposed pulp. International Endodontic Journal, 54(7), 923–934.
✔ Moinzadeh, A. T., Zerbst, W., Boutsioukis, C., Shemesh, H., & Zaslansky, P. (2021). Outcome of bioceramic sealers in endodontic treatment: A review of current evidence. International Endodontic Journal, 54(11), 1977–1994.
✔ Nagendrababu, V., Duncan, H. F., Fouad, A. F., Kirkevang, L. L., Parashos, P., Priya, E., Jayaraman, J., Siqueira, J. F., Jr., & Dummer, P. M. H. (2023). PRILE 2021 guidelines for reporting laboratory studies in Endodontology: Explanation and elaboration. International Endodontic Journal, 56(Suppl. 2), 3–64.
✔ Taha, N. A., Abdulkhader, S. Z., & Al-Qudah, A. A. (2022). Calcium silicate–based root canal sealers: A review of biological and clinical properties. Journal of Clinical Medicine, 11(17), 5067. https://doi.org/10.3390/jcm11175067
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